Sometimes I would like to illustrate my posts with images. I'd love to post my own self-made pictures but I often do not have any that suit. Where and how do I find images that have a copyright that allows them to be published here under the CC by SA 03 licence? Manchmal möchte ich meine Beit...

Often I see questions or answers which could contain some block-quotes to improve the readability. But to edit posts of other users I always have to change at least 6 characters. This is a bit disappointing. Wouldn't it be a good idea to not apply this "6 character"-rule for adding block-quotes?